90909728 ÷ 863 
We want to figure out the number of times 90909728 can be divided by 863.

Moving on to step 1:
When dividing 9 by 863, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 863

Step 2:
863 goes into 90 0 times with a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Include the next digit (9) from the dividend after 90, then repeat: 909 / 863

Going ahead to step 3:
863 can be fit into 909 1 times, resulting in a remainder of 46.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 863 from 909 to get 46.
Grab the next digit (0) from the dividend, add it to 46, then carry on: 460 / 863

On to step 4:
When dividing 460 by 863, we get 0 with a remainder of 460.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 460 leaves us with 460.
Append the next digit (9) from the dividend to 460 and continue with: 4609 / 863

On to step 5:
863 can be fit into 4609 5 times, resulting in a remainder of 294.
Use 5 as the next digit of our solution. 
Result so far: 105.0
Deduct 4315 from 4609 and we're left with 294.
Bring next digit (7) of the dividend behind the 294 and repeat the process: 2947 / 863

Step 6:
If we divide 2947 by 863, we get 3 and a remainder of 358.
Record the quotient 3 as the next digit in the result. 
Result so far: 1053.0
Deduct 2589 from 2947 and we're left with 358.
Grab the next digit (2) from the dividend, add it to 358, then carry on: 3582 / 863

Going ahead to step 7:
When dividing 3582 by 863, we get 4 with a remainder of 130.
Record the quotient 4 as the next digit in the result. 
Result so far: 10534.0
Subtracting 3452 from 3582 leaves us with 130.
Include the next digit (8) from the dividend after 130, then repeat: 1308 / 863

Moving on to step 8:
When dividing 1308 by 863, we get 1 with a remainder of 445.
Put 1 as the next digit of the answer. 
Result so far: 105341.0
Subtract 863 from 1308 to get 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

On to step 9:
863 goes into 4450 5 times with a remainder of 135.
Use 5 as the next digit of our solution. 
Result so far: 105341.5
If we take 4315 away from 4450, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 10:
The number 863 fits into 1350 1 times, leaving a remainder of 487.
Use 1 as the next digit of our solution. 
Result so far: 105341.51
If we take 863 away from 1350, we end up with 487.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4870, and continue the process.

Let's proceed to step 11:
863 goes into 4870 5 times with a remainder of 555.
Write down 5 as next digit of the result. 
Result so far: 105341.515
If we take 4315 away from 4870, we end up with 555.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

On to step 12:
If we divide 5550 by 863, we get 6 and a remainder of 372.
Write down 6 as next digit of the result. 
Result so far: 105341.5156
Subtract 5178 from 5550 to get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Advancing to step 13:
When dividing 3720 by 863, we get 4 with a remainder of 268.
Write down 4 as next digit of the result. 
Result so far: 105341.51564
Subtracting 3452 from 3720 leaves us with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Advancing to step 14:
2680 divided by 863 is 3 with a remainder of 91.
Use 3 as the next digit of our solution. 
Result so far: 105341.515643
If we subtract 2589 from 2680, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Moving on to step 15:
910 divided by 863 is 1 with a remainder of 47.
Use 1 as the next digit of our solution. 
Result so far: 105341.5156431
If we take 863 away from 910, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 16:
The number 863 fits into 470 0 times, leaving a remainder of 470.
Put 0 as the next digit of the answer. 
Result so far: 105341.5156431
If we take 0 away from 470, we end up with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

After the division, we end up with 105341.5156431 and a remainder of 4.7e-07.